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Finding the Fourth Proportional to 72,393.78, 108,621.66 and 37,358.04

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Solution

The fourth proportional to 72,393.78, 108,621.66 and 37,358.04 is: 56,053.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,393.78 : 108,621.66 = 37,358.04 : x
  2. Step 2: Convert to fraction form
    72,393.78/108,621.66 = 37,358.04/x
  3. Step 3: Cross multiply
    72,393.78x = 108,621.66 × 37,358.04
  4. Step 4: Simplify right side
    72,393.78x = 4,057,892,319.15
  5. Step 5: Solve for x
    x = 4,057,892,319.15/72,393.78
  6. Step 6: Final answer
    x = 56,053.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.